1,319 prompts matching "Practice: Deciding whether root 16 is rational or irrational"
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WAEC Prep: Choosing between a binomial and a Poisson model
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Quiz: Writing a two-dimensional vector as a column
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Quiz: The direction cosines of a vector in three dimensions
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Worked Example: Finding the unit vector in the direction of a given vector
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Worked Example: The position vector of the midpoint of AB
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Worked Example: The triangle law of vector addition
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WAEC Prep: Showing a triangle is right-angled using the dot product
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Worked Example: Testing two vectors for perpendicularity
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Quiz: The vector equation of the line through two given points
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WAEC Prep: The imaginary unit i, and why i squared is minus one
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Worked Example: The powers of i, and the cycle they follow
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Worked Example: Squaring a complex number
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WAEC Prep: The conjugate of a complex number, and how it is written
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WAEC Prep: The locus of a complex number equidistant from two points
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Quiz: Writing a complex number in polar form
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WAEC Prep: Solving a quadratic whose discriminant is negative
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WAEC Prep: Why the limit is taken as h tends to nought
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Worked Example: The quotient rule for differentiation
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WAEC Prep: A stationary point at which the second derivative is nought
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Worked Example: Classifying a stationary point by the sign of the gradient either side
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